Can I see all holidays in Brazil for 2024?

Yes! Use the `get_holidays` tool with the country 'BR' and the year 2024. It will return a full list of public and bank holidays.

How do I find the ISO code for a country?

Use the `get_countries` tool. It returns a comprehensive list of all supported countries along with their 2-letter ISO codes (e.g., 'US', 'FR', 'JP').

Does this include religious holidays like Easter?

Yes. Calendarific tracks national, bank, and religious holidays. You can identify the type of holiday in the metadata returned by the tools.

Calendarific Alternative MCP Server for Claude Desktop 2 tools — connect in under 2 minutes

Name: Calendarific Alternative
Availability: InStock
Author: Vinkius

modelcontextprotocol.io/quickstart/user

Built by Vinkius GDPR 2 Tools IDE

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Get MCP Server for AI Agents

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Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install Calendarific Alternative and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "calendarific-alternative": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Calendarific Alternative MCP Server

Equip your AI agent with global temporal intelligence through the Calendarific MCP server. This integration provides real-time access to a comprehensive database of public, bank, and religious holidays for over 200 countries. Your agent can retrieve holiday lists for specific years, filter results by month or day, and explore the list of supported countries and languages. Whether you are scheduling international meetings, planning travels, or auditing regional availability, your agent acts as a dedicated global calendar coordinator through natural conversation.

Claude Desktop is the definitive way to connect Calendarific Alternative to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 2 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

What you can do

Holiday Retrieval — Fetch all public and bank holidays for a country and year.
Temporal Filtering — Narrow down holidays by specific months or days for precise scheduling.
Country Intelligence — List all supported countries and their ISO codes for global operations.
Metadata Access — View detailed holiday descriptions and types (religious, national, etc.).
Holiday Auditing — Summarize and compare holiday calendars between different countries for better coordination.

The Calendarific Alternative MCP Server exposes 2 tools through the Vinkius. Connect it to Claude Desktop in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Calendarific Alternative to Claude Desktop via MCP

Follow these steps to integrate the Calendarific Alternative MCP Server with Claude Desktop.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using Calendarific Alternative

Look for the 🔌 icon in the chat. your 2 tools are now available

Why Use Claude Desktop with the Calendarific Alternative MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with Calendarific Alternative through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

Calendarific Alternative + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the Calendarific Alternative MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

Calendarific Alternative MCP Tools for Claude Desktop (2)

These 2 tools become available when you connect Calendarific Alternative to Claude Desktop via MCP:

get_holidays

Get holidays for a country and year

list_supported_countries

List all supported countries

Example Prompts for Calendarific Alternative in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with Calendarific Alternative immediately.

"What are the bank holidays in the UK for May 2024?"

"Check if there are any holidays in Japan on November 3rd."

"List all countries supported by Calendarific."

Troubleshooting Calendarific Alternative MCP Server with Claude Desktop

Common issues when connecting Calendarific Alternative to Claude Desktop through the Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

Calendarific Alternative + Claude Desktop FAQ

Common questions about integrating Calendarific Alternative MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.